Não informado. (2001). Special Publication. American Geographical Society.
Chicagoスタイル(17版)引用形式Não informado. Special Publication. New York: American Geographical Society, 2001.
MLA(8版)引用形式Não informado. Special Publication. American Geographical Society, 2001.
警告: この引用は必ずしも正確ではありません.